removes alias property from Abstract service as is defined by the Que…

…ryBuilderTrait

src/ZucchiDoctrine/Service/AbstractService.php

@@ -57,13 +57,6 @@ class AbstractService implements EventManagerAwareInterface
      */
     protected $entityName;
 
-    /**
-     * The default alias key for queries, 'e' for entity.
-     *
-     * @var string
-     */
-    protected $alias = 'e';
-
     /**
      * The identifying field for the entity.
      *
@@ -465,4 +458,4 @@ protected function addLimit($qb, $limit, $offset)
         }    
         return $this;
     }
-}
+}